Cooling apparatus.



No. 893,921. PATENTED JULY 31, 1908.

r w. J. HAMILTON.

, 000mm APPARATUS. APPLiUATION-FILED JULY 19, 1907- WITNESSES "Hf/I700 L/ih Y er fguwz .1 %4%;nronn r 1 '1 Application file t: -Tq ham Mui concern: g L Be t; knowmhatbvmum J. "HAMILTON in tlte bitj 'bf Newarlacounty of Essex, and

State pfNew Jersey, have invented a new arifi iisefi'il lm fovement in Cooling Appara- W p Thisifiveh dfirelates'to-cooling apparatus and more particularly to cooling apparatus ent invention; Fig. 2 is an enlarged designed for use cojoli the water orother liquid which is employe in motor vehicles propelled by explosion engines forthe purpose of cooling the engine cylinders.

The invention may,"however, be employed in other situations, and I do not limit myself to any particular use.

The main object of-the invention is to produce a cooler or radiator of great efficiency, staunch and-rigid in construction, and attractive design, at a minimum cost.

Reference is had to the accompan ing drawings, forming part of this speci cation, in which similar characters of reference indicate corresponding parts in all the views.

In the drawings: Figure 1 is a front elevation showing a cooler embodying the res};

eta' view in front elevation showing portions of two adjacent tubes and spacing members associated therewith; Fig. 3 is a sectional view on the plane 3-3 of Figs. 1 and'2.

In common with other coolers of the type to whichthe present invention relates, my improved cooler is provided with top and bottom chambers 1 and 2, the top chamber 1 being provided with a suitable inlet closed by a cap 3. Extending vertically between the chambers 1 and 2-are a plurality of tubes 4 for the passage of the water to be cooled.

The tubes 4 are spaced a art to approximately the extentindicate in Fig. 3 to permit the passage of air between "them in the "usual manner. These tubes 4 are of special construction, each being preferably formed from a single'piece of sheet metal whichis first corrugated on opposite sides of the median line, then folded on the median line to present a flattened, portion 5 and bring the corrugations together so as to form, in effect, a series of separated tubes or passages 6. The edges of the iece of sheet metal, preferably copper or rass, are then united in a seam 7 with the formation of a comparatively wide flatportion 8 between it and the adjacent passage 6. 'Each of the tubes 4 is rendered comparatively stiff by the corrugad'J'uly 19,1901 SerlakNo: sedan. F

" followingfis a specification.

st T stock without making the tube too weak to withstand the strains to which it will be sub jected. The tubes are set vertically b'-- tween'the top and bottom chambers 1 and'2 and are arranged as shown in Fig. '3, the seams of one-half of the tubes being disposed at the rear of the cooler and those of the other halfbeing disposed at the front. The

tionsjformed mul metal sf which itis made Y and ma therefore, be made of very light object of this arrangement is to bring the comparatively wide fiat portions 8 of alternate tubes opposite the comparativel' narrow flat portions 5 of the ad acent tubes, in this way bringing the passages 6 of one tube opposite the grooves 8 presented between t e corrugations of the adjacent tube, and thus producing a sinuous air assage 9 between each pair of adjacent tu es.

To hold the several tubes 4 in proper relation and to impart stiffness to the entire cooler structure, spacers 10 are employed between the tubes, being soldered or otherwise suitably secured between the flat portions of the tubes at the front and rear of the cooler. These spacers 10 are preferably of the angularly corrugated construction shown in the drawings. The advantage of this angular form of corrugation is that more surface is thereby afforded for attachment of the spacers to the tubes than would be presented if the corrugation were of a different type.

The efiiciency of the cooler is increased by the arrangement of the tubes to present sinuous air passages between the tubes. The effect of the sinuosity ofthe air passages upon the currents of air passing through them is to set up minor currents in the air as it passes through the assages, thereby bringing into contact wit the walls of the water tubes the air which but for these minor currents would lie in the middle of the current as it passes through one of the air passages and, therefore, would not come in contact with the side walls of the water tubes. This effect is of considerable importance, owing to the non-conductivity of air.

When no minor currentsare set up in a body effect upon the-liquid contained in the tu s, while the sinuous form of the air pas:

havi v spac d As the individual water tubes are formed of corrugated metal and the spacers or separators between the tubes are very secure y soldered to the tubes, the entire radiator structure is rigid and may be constructed of light Weight material, thereby insuring both cheapness and efiiciency.

Having thus described my invention,what I claim, as new and desire to secure by Letters Patent, is:

1. A cooler for liquids comprising upper and lower chambers connected by a plurality of liquid conduits, the sidewalls of which are corrugated longitudinall to form a plurality of spaced passages sai conduits plane margins secured in lateral relation by separate corrugated spacers.

andjlower chambers connected by' sheet of metal having longitudinal corruga- 2. A cooler for liquids comprising upper a rality' of liquid conduits each formed froiii a 25 tions on each side of a median lane and folded along the center line of said median plane to bring said corrugations into register to form a tube havin separate parallel li uid passages and p ane margins; said tli bes being'assembled so as to provide sinuous air passages between their external surfaces and having their plane margins secured in spaced relation by angularly corrugated spacers forming longjbearings for said plane 35 margins.

In testimony whereof, I have signed my name in the presence of two witnesses.

WILLIAM J. HAMILTON.

- Witnesses:

CHRISTIAN SPANGLER, ANDREW O. HOPLER. 

